What Have Anthropologists Learned About How Homo Habilis Used the Tools They Fashioned? Answers.com

Human being habilis

Nickname: Handy Man

Discovery Date: 1960

Where Lived: Eastern and Southern Africa

When Lived: ii.iv 1000000 to 1.iv million years agone

Height: boilerplate 3 ft 4 in - iv ft 5 in (100 - 135 cm)

Weight: average seventy lbs (32 kg)

Overview:

This species, one of the earliest members of the genus Human, has a southlightly larger braincase and smaller face up and teeth than in Australopithecus or older hominin species. But it still retains some ape-like features, including long artillery and a moderately-prognathic confront.

Its name, which means 'handy man', was given in 1964 because this species was idea to represent the offset maker of rock tools.  Currently, the oldest stone tools are dated slightly older than the oldest evidence of the genus Homo.

History of Discovery:

A squad led by scientists Louis and Mary Leakey uncovered the fossilized remains of a unique early human being betwixt 1960 and 1963 at Olduvai Gorge in Tanzania. The type speciman, OH seven, was found by Jonathan Leakey, so was nicknamed "Jonny's child". Because this early human had a combination of features dissimilar from those seen inAustralopithecus, Louis Leakey, Due south African scientist Philip Tobias, and British scientist John Napier declared these fossils a new species, and called themHomo habilis (meaning 'handy man'), because they suspected that information technology was this slightly larger-brained early human that made the thousands of stone tools likewise constitute at Olduvai Gorge.

How They Survived:

Early Man had smaller teeth than Australopithecus, only their tooth enamel was still thick and their jaws were still potent, indicating their teeth were still adapted chewing some hard foods (possibly only seasonally when their preferred foods became less bachelor).  Dental microwear studies suggest that the nutrition of H. habilisouth was flexible and versatile and that they were capable of eating a broad range of foods, including some tougher foods like leaves, woody plants, and some animal tissues, but that they did non routinely eat or specialize in eating hard foods like brittle nuts or seeds, dried meat, or very hard tubers.

Another line of evidence for the nutrition of H. habilis comes from some of the primeval cutting- and percussion-marked basic, plant back to 2.vi 1000000 years ago. Scientists unremarkably associate these traces of slaughterhouse of large animals, directly evidence of  meat and marrow eating, with the primeval appearance of the genus Human, includingH. habilis.

Many scientists think early Homo, including H. habilis,made and used the first rock tools constitute in the archaeological record—these also engagement back to virtually 2.half-dozen million years ago; however, this hypothesis is difficult to exam because several other species of early human lived at the aforementioned time, and in the aforementioned geographic area, as where traces of the earliest tool use have been institute.

Evolutionary Tree Information:

This species, along with H. rudolfensis, is one of the earliest members of the genus Homo. Many scientists think it is an ancestor of later species of Human, perhaps on our own branch of the family unit tree. Naming this species required a redefining of the genus Homo (east.thousand., reducing the lower limit of encephalon size), sparking an enormous contend about the validity of this species.

While scientists used to think that H. habilis was the ancestor of Homo erectus, recent discoveries in 2000 of a relatively late 1.44 million-year-old Man habilis (KNM-ER 42703) and a relatively early one.55 million-year-old H. erectus (KNM-ER 42700) from the same area of northern Kenya (Ileret, Lake Turkana) challenged the conventional view that these species evolved one after the other. Instead, this bear witness - along with other fossils - demonstrate that they co-existed in Eastern Africa for almost half a million years.

Questions:

We don't know everything about our early ancestors—merely we keep learning more! Paleoanthropologists are constantly in the field, excavating new areas, using groundbreaking technology, and continually filling in some of the gaps about our understanding of human evolution.

Below are some of the still unanswered questions about Homo habilis that may be answered with future discoveries:

1. Was H. habilis on the evolutionary lineage that evolved into later on species of Human being and even maybe our species, Human sapiens?
2. Are H. habilis and Homo rudolfensis indeed different species, or are they function of a single, variable species? Or was one the ancestor of the other?
3. If H. habilis is not the ancestor of Homo erectus, how does information technology fit into our evolutionary tree?
4. H. habilis is one of the earliest members of the genus Homo. Was at that place a relationship between the origin of this genus and climate change – either with an increased menstruation of climatic fluctuations, or major episodes of global cooling and drying leading to the spread of C4 grasslands?

References:

Start paper:

Leakey, L.South.B., Tobias, P.V., Napier, J.R., 1964. A new species of the genus Homo from Olduvai Gorge. Nature 202, 7-9.

Other recommended readings:

Bobe, R., Behrensmeyer, A.Yard., 2004. The expansion of grassland systems in Africa in relation to mammalian evolution and the origin of the genus Man. Palaeogeography, Palaeoclimatology, Palaeoecology 207, 399-420.

Domínguez-Rodrigo, K., Pickering, T.R., Semaw, South., Rogers, M.J., 2005. Cutmarked bones from Pliocene archaeological sites at Gona, Afar, Ethiopia: Implications for the functions of the globe's oldest stone tools. Journal of Human Evolution 48, 109-121.

Haeusler, M., McHenry, H., 2004. Body proportions of Homo habilis reviewed. Periodical of Man Evolution 46, 433-465.

Spoor, F., Leakey, M.G., Gathogo, P.N., Brown, F.H., Antón, S.C., McDougall, I., Kiarie, C. Manthi, F.K,  Leakey, L.North., 2007. Implications of new early on Homo fossils from Ileret, east of Lake Turkana, Kenya. Nature 448, 688–691.

Ungar, P.S., Grine, F.E., Teaford, M.F., El-Zaatari, Due south., 2006. Dental microwear and diets of African early on Human being. Periodical of Human Evoution 50, 78–95

 Ungar, P.South., Grine, F.E., Teaford, M.F., 2006. Diet in early on Homo: a review of the evidence and a new model of adaptive versatility. Annual Review of Anthropology 35, 209-228.

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